Christophe Leroy <christophe.le...@c-s.fr> writes:
> PPC32 also have flush_dcache_range() so it can also support
> ARCH_HAS_PMEM_API and ARCH_HAS_UACCESS_FLUSHCACHE without changes.
>
> Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
> ---
>  arch/powerpc/Kconfig | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index d7996cfaceca..cf6e30f637be 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -127,13 +127,13 @@ config PPC
>       select ARCH_HAS_KCOV
>       select ARCH_HAS_MMIOWB                  if PPC64
>       select ARCH_HAS_PHYS_TO_DMA
> -     select ARCH_HAS_PMEM_API                if PPC64
> +     select ARCH_HAS_PMEM_API
>       select ARCH_HAS_PTE_SPECIAL
>       select ARCH_HAS_MEMBARRIER_CALLBACKS
>       select ARCH_HAS_SCALED_CPUTIME          if VIRT_CPU_ACCOUNTING_NATIVE 
> && PPC64
>       select ARCH_HAS_STRICT_KERNEL_RWX       if ((PPC_BOOK3S_64 || PPC32) && 
> !RELOCATABLE && !HIBERNATION)
>       select ARCH_HAS_TICK_BROADCAST          if GENERIC_CLOCKEVENTS_BROADCAST
> -     select ARCH_HAS_UACCESS_FLUSHCACHE      if PPC64
> +     select ARCH_HAS_UACCESS_FLUSHCACHE
>       select ARCH_HAS_UBSAN_SANITIZE_ALL
>       select ARCH_HAS_ZONE_DEVICE             if PPC_BOOK3S_64
>       select ARCH_HAVE_NMI_SAFE_CMPXCHG

This didn't build for me, probably due to something that's changed in
the long period between you posting it and me applying it?

corenet32_smp_defconfig:

  powerpc64-unknown-linux-gnu-ld: lib/iov_iter.o: in function 
`_copy_from_iter_flushcache':
  powerpc64-unknown-linux-gnu-ld: 
/scratch/michael/build/maint/build~/../lib/iov_iter.c:825: undefined reference 
to `memcpy_page_flushcache'
  powerpc64-unknown-linux-gnu-ld: 
/scratch/michael/build/maint/build~/../lib/iov_iter.c:825: undefined reference 
to `memcpy_flushcache'
  powerpc64-unknown-linux-gnu-ld: 
/scratch/michael/build/maint/build~/../lib/iov_iter.c:825: undefined reference 
to `__copy_from_user_flushcache'
  powerpc64-unknown-linux-gnu-ld: 
/scratch/michael/build/maint/build~/../lib/iov_iter.c:825: undefined reference 
to `memcpy_flushcache'

cheers

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